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English definition of “nonagenarian”

nonagenarian

noun [C]     /ˌnɒn.ə.dʒəˈneə.ri.ən/ US  /ˌnɑː.nə.dʒəˈner.i-/
a person who is between 90 and 99 years oldThe elderlyOld or old-fashionedDescribing people who are oldDescribing age and birthdays nonagenarian     adjective The elderlyOld or old-fashionedDescribing people who are oldDescribing age and birthdays
(Definition of nonagenarian noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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